Structure and Transport Properties of Mixed-Matrix Membranes Based on Polyimides with ZrO2 Nanostars
AbstractMixed-matrix membranes based on amorphous and semi-crystalline polyimides with zirconium dioxide (ZrO2) nanostars were synthesized. Amorphous poly(4,4′-oxydiphenylenepyromellitimide) and semi-crystalline polyimide prepared from 1,4-bis(4-aminophenoxy)benzene and 4,4’-oxydiphthalic anhydride were used. The effect of ZrO2 nanostars on the structure and morphology of nanocomposite membranes was studied by wide-angle X-ray scattering, scanning electron microscopy, atomic force microscopy, and contact angle measurements. Thermal properties and stability were investigated by thermogravimetric analysis and differential scanning calorimetry. Transport properties of hybrid membranes containing 5 wt % ZrO2 were tested for pervaporation of a mixture of butanol–water with 10 wt % H2O content. It was found that a significant amount of the ZrO2 added to the semi-crystalline polyimide is encapsulated inside spherulites. Therefore, the beneficial influence of inorganic filler on the selectivity of mixed-matrix membrane with respect to water was hampered. Mixed-matrix membranes based on amorphous polymer demonstrated the best performance, because water molecules had higher access to inorganic particles. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Sokolova, M.P.; Smirnov, M.A.; Geydt, P.; Bugrov, A.N.; Ovaska, S.-S.; Lahderanta, E.; Toikka, A.M. Structure and Transport Properties of Mixed-Matrix Membranes Based on Polyimides with ZrO2 Nanostars. Polymers 2016, 8, 403.
Sokolova MP, Smirnov MA, Geydt P, Bugrov AN, Ovaska S-S, Lahderanta E, Toikka AM. Structure and Transport Properties of Mixed-Matrix Membranes Based on Polyimides with ZrO2 Nanostars. Polymers. 2016; 8(11):403.Chicago/Turabian Style
Sokolova, Maria P.; Smirnov, Michael A.; Geydt, Pavel; Bugrov, Alexander N.; Ovaska, Sami-Seppo; Lahderanta, Erkki; Toikka, Alexander M. 2016. "Structure and Transport Properties of Mixed-Matrix Membranes Based on Polyimides with ZrO2 Nanostars." Polymers 8, no. 11: 403.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.